get_ioctl_names.sh

   1 #!/bin/sh
   2
   3 # Invocation: ./get_macro_value.sh <kernel_src> <method_list_file> <method_symbol>
   4 kernel_src="$1"
   5 method_list_file="$2"
   6 method_symbol="$3"
   7
   8 if [ $# -ne 3 ]; then
   9   echo "bad invocation"
  10   exit 1
  11 fi
  12
  13 if [ ! -d "$kernel_src" ]; then
  14   echo "error: $kernel_src is not a directory"
  15   exit 1
  16 fi
  17
  18 # first search for the file containing the symbol
  19 symbol_file="$(grep "[,:]$method_symbol\(,\|$\)" "$method_list_file" | cut -d':' -f1)"
  20 if [ -z "$symbol_file" ]; then
  21   echo "error: can't find method in method list file"
  22   exit 1
  23 fi
  24 echo "$symbol_file"
  25 if [ "$(echo "$symbol_file"|wc -l)" -gt 1 ]; then
  26   echo "error: too many hits"
  27   exit 1
  28 fi
  29 cd "$kernel_src"
  30 grep_res="$(grep -R -n "\(^\| \)$method_symbol *\($\|(\)" "$symbol_file")"
  31 if [ -z "$grep_res" ]; then
  32   echo "error: can't find method in source"
  33   exit 1
  34 fi
  35 echo "$grep_res"
  36 if [ "$(echo "$grep_res"|wc -l)" -gt 1 ]; then
  37   echo "error: too many results"
  38 fi
  39 symbol_line="$(echo "$grep_res" | cut -d':' -f1)"
  40 echo "symbol is in $symbol_file, line $symbol_line"
  41
  42 # now isolate the method's code
  43 partial_symbol_file="$(cat "$symbol_file" | tail -n "+$symbol_line")"
  44 symbol_lines="$(echo "$partial_symbol_file" | grep -n '^}' | head -n 1 | cut -d':' -f1)"
  45 echo "symbol is $symbol_lines lines long"
  46 symbol_code="$(echo "$partial_symbol_file" | head -n "$symbol_lines")"
  47 echo "dumping symbol code:"
  48 echo ""
  49 echo "$(echo "$symbol_code" | sed 's|^|        |g')"
  50 echo ""
  51
  52 # grep for case statements
  53 case_exprs="$(echo "$symbol_code" | grep 'case  *[a-zA-Z0-9_]*:' | sed 's|.*case  *\([a-zA-Z0-9_]*\):.*|\1|g')"
  54 echo "ioctls found: $(echo "$case_exprs" | tr '\n' ' ')"
  55